ASTROSAT CZTI

Data Quality Report

Orbit 42416

Creation date: 2024-06-27T22:40:00.335488
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_138T01_9000005802_42416cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42416cztM0_level2_quad_clean.evt
Size (bytes)393,203,52089,527,680
Size375.0 MB 85.4 MB
Events in quadrant A2,875,411623,410
Events in quadrant B2,416,201639,134
Events in quadrant C2,500,142610,980
Events in quadrant D6,376,281488,363

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114722
B0103092
C0104034
D0222862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497890.180796%
B4978180.361591%
C497790.180832%
D497791218.324292%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7041 4979 4 4 0.06% 0.08%
B 7041 4979 8 8 0.11% 0.16%
C 7040 4978 8 8 0.11% 0.16%
D 7040 4978 1050 1050 14.91% 21.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 544240 4498.31 590 580 120.9
A 13 248 20290 163.08 590 580 120.9
A 7 3 16710 133.46 590 580 120.9
B 15 36 37805 334.06 582 568 111.5
B 3 112 35197 310.66 582 568 111.5
B 0 245 28183 247.74 582 568 111.5
C 15 214 210452 1615.12 568 573 129.9
C 3 110 40628 308.24 568 573 129.9
C 14 254 18172 135.43 568 573 129.9
D 12 33 2697619 20426.71 544 530 132.0
D 1 52 776712 5878.5 544 530 132.0
D 6 219 423549 3203.78 544 530 132.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter